Regina in Oregon, USA, had listed "peace related cards" as one of her interests. I figured a card featuring 10 people of mixed age, gender and race all sitting together, and all holding up the peace sign was pretty darned peace related, so off it went!
The back of the card simply said "NEW YORK CITY, 1993".
I really don't like to just slap on any random stamps on postcards. Matching stamps to interests, too, is a part of the enjoyment of postcarding for me.
These stamps matched some of her interests, also.